package com.lcc.common.valid;

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
import java.util.HashSet;
import java.util.Set;

//ConstraintValidator<校验注解, 指定校验什么类型的数据>
public class ListValueConstraintValidator implements ConstraintValidator<ListValue, Integer> {
    private Set<Integer> set = new HashSet<>();
    //初始化方法：将合法的值加入到集合中
    @Override
    public void initialize(ListValue constraintAnnotation) {
        int[] vals = constraintAnnotation.vals();
        for (int val : vals) {
            set.add(val);
        }
    }

    /**
     * 判断是否校验成功
     * @param integer 需要校验的值(字段提交的校验器的值)
     * @param constraintValidatorContext 上下文环境
     * @return
     */
    @Override
    public boolean isValid(Integer integer, ConstraintValidatorContext constraintValidatorContext) {

        return set.contains(integer);
    }
}
